The control characters the Model
880
recognizes
are
listed in Table 5-2. Codes not listed are
ignored.
Control
Char
NUL
EOT
ENQ
BEL
BS
HT
LF
VT
FF
CR
SO
SI
DC1
DC2
5-2
Hex
Code
00
04
05
07
08
09
OA
OB
OC
00
OE
OF
11
12
Decimal
Code
o
4
5
7
8
9
10
11
12
13
14
15
17
18
Table
5-2.
Control
Character
Operations
Description
and
Operation
Null. Terminates some
tab
set escape sequences.
End
Of Transmission. Cnfg. code
99
ON: Current data line is odd horizontal raster
graphics data; code
99
OFF:
Not
used.
Enquiry. Cnfg. code
99
ON: Current line
of
data is even horizontal raster graphics
data; code
99
OFF:
Not
used.
Bell. Makes short beep
Backspace. Moves the
logical print position back one space. No operation
at
left
margin.
Horizontal tab. Moves
logical print position
to
next horizontal tab. Does
CR
and
LF
if
no tabs are set between current position and right margin.
Line Feed. Cnfg. code
84 or 8B ON: Prints line, advances paper one line, logical
CR
to
left margin; Codes
84
and 8B OFF: prints line, advances paper one line
to
next
logical print position
in
the
same column.
Vertical
tab. Cnfg. code 8B ON: Adds
auto
CR.
Code 8B OFF: Prints line, advances
paper
to
next tab, same column.
Form feed. Prints line, advances paper
to
the
top
left margin
of
the next form.
Carriage return. Cnfg. code
85 ON: Prints line, does
CR
and
LF;
code 85 OFF: Prints
line and does
CR
only.
Shift
Out. Cnfg. code
9A
ON: Expanded print line
if
first character
in
line; code
9A
OFF: Select
G1
character set
as
active GL character set.
Shift
In. Select
GO
character set
as
active GL character set.
Device
Control
1.
Cnfg. code
83
ON: Transmitted on serial interface
to
indicate
"READY."
(A
received
DC1
is ignored.) Cnfg code
83
OFF:
Not
used.
Device
Control 2. Cnfg. code 8B ON: Tab
to
line
of
decimal number
of
next byte and
do
CR.
Code 8B OFF: Tab
to
line
of
decimal number
of
next byte.
..
..
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